Simple gas penetration experiment device

Abstract

The utility model discloses a simple gas penetration experiment device, which can efficiently, accurately and quickly realize the adsorption and separation of conventional mixed gas components, and is characterized by comprising the following technical scheme: (1) a flow meter is connected with a transverse port of a first three-way valve through a stainless steel pipe, and the transverse port of the first three-way valve is connected with a transverse port of a second three-way valve through a stainless steel pipe; the other flowmeter is connected with a middle port of a second three-way valve through a stainless steel pipe, the rest transverse port of the first three-way valve is communicated with one transverse port of the second three-way valve through a stainless steel pipe, and the middle port of the first three-way valve is connected with a feeding port of an adsorption column; the rest transverse port of the second three-way valve is communicated with the atmosphere through a stainless steel pipe; the outlet of the adsorption column is connected with a gas chromatograph or a mass spectrometer; (2) connecting a back pressure valve between the outlet of the adsorption column and the gas chromatograph or the mass spectrometer; and (3) winding a heating belt on the outer side of the adsorption column, wherein the heating belt is connected with a temperature controller.

Description

Technical Field

[0001] The invention provides a simple gas penetration experimental device, belonging to the technical field of chemical separation. Background Art

[0002] Adsorption separation is an advanced material separation technology. It has been widely used in the fields of chemical industry, medicine, water treatment, gas separation, etc. due to its high efficiency, low energy consumption and environmental friendliness. The design and performance evaluation of adsorption materials are key steps in realizing the application of adsorption separation. For gas separation, the penetration experiment is an important link in evaluating the effect of the adsorbent, among which the penetration experiment device is the core evaluation test device. The separation devices currently on the market are mainly related equipment produced by Mack Company, but the cost is relatively high, which is not conducive to large-scale promotion and application. This limits the timely and effective evaluation of adsorbent performance by relevant units, affecting downstream industries and related processes. In response to the above problems, the present invention provides a simple gas penetration experiment device, which effectively solves the problem of high cost of the penetration experiment device. Summary of the invention

[0003] The present invention provides a simple gas penetration experimental device. The experimental device can efficiently, accurately and quickly realize the adsorption separation of conventional mixed gas components. Compared with commercially available devices, it has a simple structure, low cost, and convenient operation, and can also control the separation temperature, pressure, etc. according to actual needs. The device is expected to be applied on a large scale, which is of great benefit to laboratory simulation separation processes. At the same time, the application of this device can also solve the bottleneck problem of my country's excessive dependence on imports of scientific research instruments to a certain extent. In order to achieve the above-mentioned invention purpose, the present invention adopts the following technical scheme:

[0004] A simple gas penetration experimental device includes the following technical solutions:

[0005] (1) A flow meter is connected to a transverse port of a first three-way valve through a stainless steel pipe, another flow meter is connected to a middle port of a second three-way valve through a stainless steel pipe, the remaining transverse port of the first three-way valve is connected to a transverse port of the second three-way valve through a stainless steel pipe, the middle port of the first three-way valve is connected to a feed port of an adsorption column, the remaining transverse port of the second three-way valve is connected to the atmosphere through a stainless steel pipe, and the outlet of the adsorption column is connected to a gas chromatograph or a mass spectrometer.

[0006] The raw gas may be air, ethylene-ethane mixed gas, propylene-propane mixed gas, carbon dioxide-nitrogen mixed gas, carbon dioxide-methane mixed gas, C4 hydrocarbon mixed gas, or hydrogen-carbon dioxide mixed gas.

[0007] The purge gas can be helium, argon or nitrogen.

[0008] The adsorbent filled in the adsorption column can be activated carbon, oxide, hydroxide, molecular sieve, metal organic framework material, covalent organic framework material or porous organic polymer.

[0009] (2) Connect a back pressure valve between the outlet of the adsorption column and the gas chromatograph or mass spectrometer.

[0010] The back pressure valve can ensure the normal operation of the gas chromatograph or mass spectrometer.

[0011] (3) A heating belt is wrapped around the outside of the adsorption column, and the heating belt is connected to a temperature controller.

[0012] The temperature controller can ensure safe operation.

[0013] Another object of the present invention is to provide a mixed gas separation result achieved by utilizing the above device.

[0014] The effects and benefits of the present invention are: efficient, accurate and rapid adsorption separation of conventional mixed gas components. Compared with commercially available devices, the device has a simple structure, low cost, and convenient operation, and can also control the separation temperature, pressure, etc. according to actual needs. The device is expected to be applied on a large scale, which is of great benefit to laboratory simulation separation processes. At the same time, the application of the device can also solve the bottleneck problem of my country's excessive dependence on imports of scientific research instruments to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is attached Figure 4 Size:

[0016] Figure 1 It is a schematic diagram of a simple gas penetration device (① is purge gas, ② is flow meter, ③ is three-way valve, ④ is stainless steel pipe, ⑤ is adsorption column filled with adsorbent, ⑥ is feed gas, ⑦ is gas chromatograph or mass spectrometer);

[0017] Figure 2 This is a schematic diagram of the heating device (⑧ is a temperature controller, ⑨ is a heating belt, ⑩ is a thermocouple, for wires);

[0018] Figure 3 1 is a diagram of the separation result of Example 1, from which it can be seen that carbon dioxide and nitrogen are efficiently separated;

[0019] Figure 4 This is the separation result diagram of Example 2. It can be seen from the figure that carbon dioxide and methane are efficiently separated. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described below in conjunction with the embodiments and drawings, but the implementation of the present invention is not limited thereto.

[0021] Example 1. Separation of carbon dioxide and nitrogen using the above-mentioned simple gas penetration experimental device

[0022] ① is filled with helium, ⑤ is filled with 0.3g of metal organic framework adsorbent, ⑥ is filled with a mixture of carbon dioxide and nitrogen with a volume ratio of 15:85, and ⑦ is a gas chromatograph. Open the gas cylinder, set the flow rates of purge gas and raw gas to 10 ml / min and 2 ml / min respectively. The three-way valve is used to connect AC and EF first, purge the adsorption column for 30 minutes, and clean the pipeline with raw gas. Then adjust the three-way valve to connect BC and DF respectively, and monitor the signal with a gas chromatograph.

[0023] Example 2. Separation of carbon dioxide and methane using the above-mentioned simple gas penetration experimental device

[0024] ① is filled with helium, ⑤ is filled with 0.5g molecular sieve adsorbent, ⑥ is filled with a mixture of carbon dioxide and methane with a volume ratio of 50:50, and ⑦ is a mass spectrometer. Open the gas cylinder, set the flow rates of purge gas and raw gas to 10 ml / min and 2 ml / min respectively. First, connect AC and EF with the conditional three-way valve, purge the adsorption column for 30 minutes, and clean the pipeline with raw gas. Then adjust the three-way valve to connect BC and DF respectively, and monitor the signal with a mass spectrometer.

Claims

1. A simple gas penetration test device, characterized in that: Including the following technical solutions: (1) A flow meter is connected to a transverse port of a first three-way valve through a stainless steel pipe, another flow meter is connected to a middle port of a second three-way valve through a stainless steel pipe, the remaining transverse port of the first three-way valve is connected to a transverse port of the second three-way valve through a stainless steel pipe, the middle port of the first three-way valve is connected to a feed port of an adsorption column, the remaining transverse port of the second three-way valve is connected to the atmosphere through a stainless steel pipe, and the outlet of the adsorption column is connected to a gas chromatograph or a mass spectrometer; (2) connecting a back pressure valve between the outlet of the adsorption column and the gas chromatograph or mass spectrometer; (3) A heating belt is wrapped around the outside of the adsorption column, and the heating belt is connected to a temperature controller.

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